<!DOCTYPE html>
<html xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <title>index.html</title>
    <meta name="content-type" content="text/html; charset=UTF-8">
</head>
<body>
<form action="/yanzheng" method="post">
    用户ming：<input type="text" name="username" placeholder="请输入用户名"><br>
    密码：<input type="password" name="password" placeholder="请输入密码"><br>
    <input type="submit" value="登录">
</form>
</body>
</html>
